# OSBORN WASH

- **MSHA mine ID:** 0201315
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** La Paz, AZ
- **Operator:** Colorado River Sand and Rock
- **Controller:** Colorado River Indian Tribes
- **Public source rows linked:** 713
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Colorado River Indian Tribes (M12124) → Colorado River Sand and Rock (L15905) → OSBORN WASH (0201315)**

Current identity source: `msha-mines`. This is a current snapshot, not a historical claim.

## Controller and operator valid-time history

- **Tanner Companies → Tanner Companies:** 1978-03-09 through 1987-08-31; derived from co-tenure at mine 0201315; source `msha-controller-operator-history`.
- **Ashland Inc → Tanner Companies:** 1987-09-01 through 1994-02-28; derived from co-tenure at mine 0201315; source `msha-controller-operator-history`.
- **Peter Kiewit Sons' Inc → Tanner Companies:** 1994-03-01 through 1998-04-09; derived from co-tenure at mine 0201315; source `msha-controller-operator-history`.
- **Colorado River Indian Tribes → Colorado River Sand and Rock:** 1998-04-10 through current/open; derived from co-tenure at mine 0201315; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 12
- Interval anomalies: 0
- Valid-time bounds: inclusive; date granularity; null end means open-ended in the upstream history row; not independent proof of present control.
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 3 historical accident/injury rows; 0 coded fatalities and 31 lost days across the published record.
2. **COMPLIANCE — 41 since 2021:** Violations and penalties 183 violation rows across the full record; 62 carry an S&S flag and $52,753 appears in current assessed amounts.
3. **HEALTH — 10 samples:** Occupational health samples 10 personal. 0 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
4. **PRODUCTION — 0 tons:** Quarterly production and employment 2K employee hours and 4 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 0 linked entities:** Contractors Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
7. **INSPECTIONS — 16 since 2021:** Inspections 62 inspection events and 675 published inspection hours across the historical record.

## EIA annual operating context

No matched record in the 2024 EIA coal-public workbook. This may be inapplicable for a non-coal operation.

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.12028 — Testing grounding systems.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.9301 — Dump site restraints.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **30 CFR 56.14108 — Overhead drive belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14108
- **30 CFR 56.18009 — Designation of person in charge.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18009
- **30 CFR 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019
- **30 CFR 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2006-08-25 through 2010-09-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-02-03 through 2014-02-03; source ID `msha-addresses`
- **Assessed Violations:** 183 rows; 2000-06-27 through 2026-06-03; source ID `msha-assessed-violations`
- **Controller and Operator History:** 4 rows; 1978-03-09 through 1998-04-10; source ID `msha-controller-operator-history`
- **Inspections:** 62 rows; 2000-06-27 through 2026-06-03; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 212 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Metal and Nonmetal Personal Health Samples:** 10 rows; 2010-03-31 through 2026-06-03; source ID `msha-personal-health-samples`
- **Violations:** 183 rows; 2000-06-27 through 2026-06-03; source ID `msha-violations`

## Caveats

- This is public-record decision support, not legal advice or an official MSHA record.
- Missing data can indicate no event, publication delay, an unresolved identity, or inapplicability.
- Contractor production data is entity-level and is not attributed to this mine.

## Alternate representations

- HTML: `/mines/osborn-wash-0201315`
- JSON: `/api/v1/mines/osborn-wash-0201315`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0201315/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0201315/relationships`
- MCP resource: `mine://0201315/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`